Question

2. The speed of light in diamond is 125,000 km
a glassWhat is its refractive index ? (Speed of light in
= 3 × 108 m s-1).
Ans, singl
mons​

Answer 1

Given: The speed of light in diamond is 125,000 km / s.

To find: What is its refractive index ?

Solution:

Now we have given the speed of light in diamond is 125,000 km / s.

We have also given the speed of light in vacuum = 3 × 10^8 m/s

So speed of light in diamond will be:

                  125000 × 1000 m/s

                  1.25 × 10^8 m/s

Now we know that refractive index is equal to speed of light vacuum upon speed of light in medium

                  Refractive Index  = 3 × 10^8 / 1.25 × 10^8

                  Refractive Index  = 2.4

Answer:

            So the refractive index is 2.4